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	<h1 class="blind">source/jindo.CircularRolling.js</h1>
	<div class="tc-panel first">
		<dl class="relation">
			<dt>파일명</dt>
			<dd>jindo.CircularRolling.js</dd>
			<dt>경로</dt>
			<dd>source/</dd>
		</dl>
		<div id="file" class="file">
		    <pre class="code prettyprint linenums">/**
	@fileOverview&nbsp;목록을&nbsp;순환이동하는&nbsp;롤링&nbsp;컴포넌트
	@author&nbsp;hooriza,&nbsp;modified&nbsp;by&nbsp;senxation
	@version&nbsp;#__VERSION__#
**/
/**
	jindo.CircularRolling&nbsp;컴포넌트는&nbsp;리스트의&nbsp;아이템을&nbsp;무한대로&nbsp;순환하여&nbsp;이동시키는&nbsp;롤링&nbsp;컴포넌트이다.
	
	@class&nbsp;jindo.CircularRolling
	@extends&nbsp;jindo.Rolling
	@keyword&nbsp;rolling,&nbsp;circular,&nbsp;롤링,&nbsp;순환,&nbsp;회전
**/
jindo.CircularRolling&nbsp;=&nbsp;jindo.$Class({
	/**
		@constructor
		@param&nbsp;{String&nbsp;|&nbsp;HTMLElement}&nbsp;el&nbsp;리스트를&nbsp;감싸고&nbsp;있는&nbsp;엘리먼트의&nbsp;id&nbsp;혹은&nbsp;엘리먼트&nbsp;자체&nbsp;&nbsp;
		@param&nbsp;{Object}&nbsp;[htOption]&nbsp;옵션객체
			@param&nbsp;{Number}&nbsp;[htOption.nFPS=50]&nbsp;초당&nbsp;롤링&nbsp;이동을&nbsp;표현할&nbsp;프레임수
			@param&nbsp;{Number}&nbsp;[htOption.nDuration=800]&nbsp;transition이&nbsp;진행&nbsp;될&nbsp;시간,&nbsp;단위&nbsp;ms
			@param&nbsp;{String}&nbsp;[htOption.sDirection=&quot;horizontal&quot;]&nbsp;롤링의&nbsp;방향&nbsp;설정.
			&lt;ul&gt;
				&lt;li&gt;&quot;horizontal&quot;&nbsp;:&nbsp;가로&lt;/li&gt;
				&lt;li&gt;&quot;vertical&quot;&nbsp;:&nbsp;세로&lt;/li&gt;
			&lt;/ul&gt;
			@param&nbsp;{Function}&nbsp;[htOption.fEffect=jindo.Effect.linear]&nbsp;jindo.Effect&nbsp;이펙트&nbsp;함수
			@param&nbsp;{String}&nbsp;[htOption.sClassPrefix=&quot;rolling-&quot;]&nbsp;초기&nbsp;HTML/CSS구조에서&nbsp;필요한&nbsp;className&nbsp;앞에&nbsp;붙는&nbsp;prefix를&nbsp;정의
		@example
			var&nbsp;oCircularRolling&nbsp;=&nbsp;new&nbsp;jindo.CircularRolling(jindo.$(&quot;rolling&quot;),&nbsp;{
				sDirection&nbsp;:&nbsp;&quot;vertical&quot;
			});
	**/
	$init&nbsp;:&nbsp;function()&nbsp;{
		this.refresh();
	},
	
	/**
		롤링&nbsp;컴포넌트를&nbsp;다시&nbsp;로드한다.&nbsp;리스트가&nbsp;갱신되었을때&nbsp;호출하여야한다.
		
		@method&nbsp;refresh
		@return&nbsp;{this}&nbsp;리스트를&nbsp;갱신한&nbsp;인스턴스&nbsp;자신
	**/
	refresh&nbsp;:&nbsp;function()&nbsp;{
		this.getTransition().abort();
		this._el[this._oKeys.scrollLeft]&nbsp;=&nbsp;0;
		this._nDuplicateCount&nbsp;=&nbsp;0;
		this._nItemCount&nbsp;=&nbsp;this.getItems().length;
		this._nDisplayedCount&nbsp;=&nbsp;this.getDisplayedItemCount();
		if&nbsp;(this.isOverflowed())&nbsp;{
			this._nDuplicateCount&nbsp;=&nbsp;(this._nDisplayedCount&nbsp;&lt;=&nbsp;(this._nItemCount&nbsp;/&nbsp;2))&nbsp;?&nbsp;1&nbsp;:&nbsp;2;
			this._duplicate(this._nDuplicateCount);
		}
		return&nbsp;this;
	},
	
	_duplicate&nbsp;:&nbsp;function(n)&nbsp;{
		var&nbsp;elList&nbsp;=&nbsp;this._elList,
			elDuplicatedList&nbsp;=&nbsp;jindo.$(&#39;&lt;&#39;&nbsp;+&nbsp;elList.tagName&nbsp;+&nbsp;&#39;&gt;&#39;),
			sListInnerHTML&nbsp;=&nbsp;elList.innerHTML,
			aItem;

		var&nbsp;sItemClassQuery&nbsp;=&nbsp;&#39;&gt;&#39;&nbsp;+&nbsp;(this._bUsedClassPrefix&nbsp;?&nbsp;&#39;.&#39;&nbsp;+&nbsp;this.option(&#39;sClassPrefix&#39;)&nbsp;+&nbsp;&#39;item&#39;&nbsp;:&nbsp;&#39;li&#39;);
		
		for&nbsp;(var&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;&lt;&nbsp;n;&nbsp;i++)&nbsp;{
			elDuplicatedList.innerHTML&nbsp;=&nbsp;sListInnerHTML;
			aItem&nbsp;=&nbsp;jindo.$$(sItemClassQuery,&nbsp;elDuplicatedList);
			for&nbsp;(var&nbsp;j&nbsp;=&nbsp;0;&nbsp;j&nbsp;&lt;&nbsp;aItem.length;&nbsp;j++)&nbsp;{
				elList.appendChild(aItem[j]);
			}
		}
	},
	
	_setStartPosition&nbsp;:&nbsp;function(n,&nbsp;nTo)&nbsp;{
		var&nbsp;oKeys&nbsp;=&nbsp;this._oKeys;
		var&nbsp;nNewPosition&nbsp;=&nbsp;n&nbsp;%&nbsp;(this._nItemCount)&nbsp;||&nbsp;0;
		if&nbsp;(n&nbsp;+&nbsp;nTo&nbsp;&lt;&nbsp;0)&nbsp;{
			var&nbsp;nTimes&nbsp;=&nbsp;this._nDuplicateCount;
			if&nbsp;(nNewPosition&nbsp;+&nbsp;this._nDisplayedCount&nbsp;&gt;&nbsp;this._nItemCount)&nbsp;{
				nTimes&nbsp;-=&nbsp;1;
			}&nbsp;
			nNewPosition&nbsp;+=&nbsp;this._nItemCount&nbsp;*&nbsp;nTimes;
		}
		this._el[oKeys.scrollLeft]&nbsp;=&nbsp;this._getPosition(nNewPosition);
	},
	
	/**
		현재&nbsp;위치와&nbsp;n만큼&nbsp;떨어진&nbsp;아이템으로&nbsp;이동한다.&nbsp;
		롤링이&nbsp;진행중일때에는&nbsp;이동되지&nbsp;않고&nbsp;false를&nbsp;리턴한다.
		
		@method&nbsp;moveBy
		@param&nbsp;{Number}&nbsp;n&nbsp;얼마나&nbsp;떨어진&nbsp;아이템으로&nbsp;이동할지&nbsp;(음수와&nbsp;양수&nbsp;모두&nbsp;사용&nbsp;할&nbsp;수&nbsp;있음)
		@return&nbsp;{Boolean}&nbsp;이동&nbsp;성공&nbsp;여부
	**/
	moveBy&nbsp;:&nbsp;function(n)&nbsp;{
		if&nbsp;(this.isMoving())&nbsp;{
			return&nbsp;false;
		}
		
		/*
		if&nbsp;(Math.abs(n)&nbsp;&gt;&nbsp;this._nDisplayedCount)&nbsp;{
			if&nbsp;(n&nbsp;&gt;&nbsp;0)&nbsp;{
				n&nbsp;=&nbsp;this._nDisplayedCount;
			}&nbsp;else&nbsp;{
				n&nbsp;=&nbsp;-this._nDisplayedCount;
			}
		}
		*/
		
		var&nbsp;bBig&nbsp;=&nbsp;(n&nbsp;&gt;=&nbsp;this._nItemCount);
		
		n&nbsp;=&nbsp;n&nbsp;%&nbsp;this._nItemCount;
		if&nbsp;(bBig)&nbsp;{&nbsp;n&nbsp;+=&nbsp;this._nItemCount;&nbsp;}
		
		this._setStartPosition(this.getIndex(),&nbsp;n);
		
		var&nbsp;nTarget&nbsp;=&nbsp;this.getIndex()&nbsp;+&nbsp;n;
		if&nbsp;(!this._move(nTarget))&nbsp;{
			return&nbsp;false;
		}
		return&nbsp;true;
	}

}).extend(jindo.Rolling);
</pre>
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